Filter frame



FIG. 1 is a top plan view of a filter frame of the present invention.

FIG. 2 is an enlarged detailed top plan view of a segment of the filter frame.

FIG. 3 is a bottom plan view of the filter frame.

FIG. 4 is an enlarged detailed bottom plan view of a segment of the filter frame.

FIG. 5 is an elevation view of the front of the filter frame, the rear view being identical.

FIG. 6 is a side elevation view of the filter frame, the opposite side view being identical.

FIG. 7 is a top perspective view of the filter frame.

FIG. 8 is an enlarged detailed top perspective view of a segment of the filter frame.

FIG. 9 is an enlarged side elevation view of a segment of the filter frame corresponding to FIG. 6.

FIG. 10 is an enlarged front elevation view of a segment of the filter frame corresponding to FIG. 5; and,

FIG. 11 is an enlarged perspective view of a segment of the filter frame corresponding to FIG. 7. 

CLAIM The ornamental design for a filter frame, as shown and described. 